Uppers

Daniel Defense

Daniel Defense DD4 RIII URG 5.56mm Accessory Upper with 12.5-inch FDE RIS III M-LOK Rail

Heckler & Koch (HK USA)

Heckler & Koch MR556A4 URK Upper Kit 5.56mm with M-Lok Handguard

Radian Weapons

Radian Weapons Model 1 Upper Receiver in 223 Wylde – 14.5 inch Black Finish

Daniel Defense

Daniel Defense DDM4 V7 Pro URG 5.56 NATO Upper Receiver Assembly

Heckler & Koch (HK USA)

Heckler & Koch MR556A4 Upper Kit 5.56mm with M-Lok Handguard - Matte Black

Radian Weapons

Radian Weapons Model 1 Upper Receiver in 223 Wylde with Black Finish

Radian Weapons

Radian Weapons Model 1 Upper Receiver in 223 Wylde with Radian Grey Finish R0471

Radian Weapons

Radian Weapons Model 1 Upper Receiver for 300 AAC Blackout - 9 inch Black Finish

Radian Weapons

Radian Weapons Model 1 Upper Receiver in Flat Dark Earth - 14.5 Inch .223 Wylde

Radian Weapons

Radian Weapons Model 1 Upper Receiver in 223 Wylde with Radian Grey Finish

Daniel Defense

Daniel Defense M4A1 URG 5.56mm 14.5-inch Matte Black Upper Receiver Assembly

Radian Weapons

Radian Weapons Model 1 Upper Receiver for 223 Wylde - 10.5 Inch Black Finish